2.5V/15A负载点转换模块(POLM)的设计与实现  

Design and Realization of 2.5V/15A POLM

作　　者：孟颖悟[1] 孙立萌[1] 田育新[1] 但星亭[1] 

机构地区：[1]中国航空计算技术研究所,陕西西安710068

出　　处：《电源技术应用》2007年第7期12-16,共5页Power Supply Technologles and Applications

摘　　要：设计了一种高性能低压大电流负载点转换模块(POLM),以满足新一代高性能机载计算机的发展需求。采用了零电压软开关技术和同步整流(SR)技术,对传统的降压式变换器(Buck)进行了优化设计,使得开关频率高达500kHz,效率高达94%,功率密度6.3W/cm^3,动态负载响应恢复时间80μs,上冲幅值32mV,下冲幅值24mV。使用Pspice对该电路进行仿真,得到的仿真结果同理论分析一致。最后给出了5V输入,2.5V/15A输出POLM的实验数据、波形和结论。A module of high performance low voltage/ high current to meet demand of new the generation high performance airborne computer is designed. The performance of tradition buck converter is optimized by adopting zero voltage switching （ZVS） and synchronous rectification （SR） technology, as a result, switching frequency is upgraded to 500kHz, efficency is to 94 percent, power density is to 6.3W/cm^3, recovery time of dynamic response is 80μs, overshoot voltage is 32mV, undershoot is 24mV. The circuit is simulated by Pspice, The simulation result accords with theory analysis. Finally given the experiment data, wave and conclusion for POLM about 5V input and 2.5V/15A output.

关 键 词：低压大电流 POLM同步整流 动态响应 

分 类 号：TN86[电子电信—信息与通信工程]